AAT1184 Datasheet, PDF (8/18 Pages) Advanced Analogic Technologies – High Voltage Step-Down Regulator

Typical Characteristics
Step-Down Converter Soft Start
(V_IN = 12V; V_EN = 10V; V_OUT = 3.3V; I_OUT = 1.2A)
15
10
5
0
2
1
0
Time (500µs/div)
Step-Down Converter Switching Frequency
vs. Input Voltage
(V_IN = 6V to 24V; V_OUT = 3.3V; I_OUT = 1.2A)
2.0
1.5
1.0
0.5
0.0
-0.5
-1.0
-1.5
-2.0
6
8
10 12 14 16
18 20 22 24
Input Voltage (V)
Step-Down Converter Output
Voltage Error vs. Temperature
(V_IN = 12V; V_OUT = 5V)
1.0
0.8
IOUT = 0.1mA
0.6
IOUT = 10mA
0.4
IOUT = 100mA
IOUT = 600mA
0.2
IOUT = 1200mA
0.0
-0.2
-0.4
-0.6
-0.8
-1.0
-50
-25
0
25
50
75
100
Temperature (°C)
DATA SHEET
AAT1184
High Voltage Step-Down Regulator
Step-Down Converter Soft Start
(V_IN = 12V; V_EN = 10V; V_OUT = 5V; I_OUT = 1.2A)
15
10
5
0
2
1
0
Time (500µs/div)
1.5
1.0
0.5
0.0
-0.5
-1.0
-1.5
-50
Step-Down Converter Output
Voltage Error vs. Temperature
(V_IN = 12V; V_OUT = 3.3V)
IOUT = 0.1mA
I_OUT = 10mA
IOUT = 100mA
IOUT = 600mA
I_OUT = 1200mA
-25
0
25
50
75
100
Temperature (°C)
No Load Step-Down Converter
Input Current vs. Input Voltage
(V_EN = V_IN)
650
600
550
500
450
400
350
300
6
85°C
25°C
-40°C
9
12
15
18
21
24
Input Voltage (V)
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8
202000A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 29, 2012